Hello @massi
I’m having the same issue again, but now I see a different message on the log:
2021-01-24 21:10:03.099 [DEBUG] [ebnet.handler.OpenWebNetThingHandler] - handleCommand() (command=OFF - channel=openwebnet:bus_on_off_switch:MH202_00035001e89b:18:switch)
2021-01-24 21:10:03.102 [DEBUG] [et.handler.OpenWebNetLightingHandler] - handleSwitchCommand() (command=OFF - channel=openwebnet:bus_on_off_switch:MH202_00035001e89b:18:switch)
2021-01-24 21:10:03.107 [WARN ] [nwebnet4j.communication.BUSConnector] - ##BUS-conn## Exception: Received null frame while reading responses to command
2021-01-24 21:10:03.111 [WARN ] [nwebnet4j.communication.BUSConnector] - ##BUS-conn## trying NEW CMD connection...
2021-01-24 21:10:03.133 [WARN ] [communication.BUSConnector.handshake] - (HS) ... STEP-2: cannot authenticate with gateway (unexpected answer: *#971908##)
2021-01-24 21:10:03.135 [ERROR] [nwebnet4j.communication.BUSConnector] - ##BUS-conn## openCommandConnection() returned exception (Cannot authenticate with gateway: handshake failed at STEP-2 (unexpected answer: *#971908##)) while opening NEW CMD connection
2021-01-24 21:10:03.136 [ERROR] [webnet4j.communication.OpenConnector] - ##OPEN-conn## IOException while sending frame *1*0*18## or reading response: Cannot create NEW CMD connection to send message *1*0*18##
2021-01-24 21:10:03.138 [WARN ] [et.handler.OpenWebNetLightingHandler] - Exception while processing command OFF: IOException while sending frame *1*0*18## or reading response: Cannot create NEW CMD connection to send message *1*0*18##
2021-01-24 21:10:05.119 [WARN ] [nwebnet4j.communication.BUSConnector] - (HS) ... handshake not completed but timeout expired, closing BUS-CMD channel
What do you recommend?